Knee protector



FIG. 1 is a perspective view of a knee protector showing my new design;

FIG. 2 is a front elevational view;

FIG. 3 is a top plan view;

FIG. 4 is a left side elevational view;

FIG. 5 is a right side elevational view;

FIG. 6 is a bottom plan view;

FIG. 7 is a rear elevational view; and

FIG. 8 is a rear elevational view of a modified form of a knee protector showing my new design wherein the strap and buckle are reversed. 

The ornamental design for a knee protector, as shown and described. 